Question

(2,18+3,32) x 7,2
(6,23-3,83) x 6,5
9,7:(8,11-3,26)
x²+ 7x+12≈0
x²-2x-35
2x²-5x-3≈0

Answer 1

(2,18+3,32)х7,2=5,5х7,2=39,6.
(6,23-3,83)х6,5=2,4х6,5=15,6.
9,7:(8,11-3,26)= 9,7:4,85=2.